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Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c91
1 files changed, 72 insertions, 19 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 8451ab481095..956a9f4971cb 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -19,6 +19,7 @@
#include <linux/netdevice.h>
#include <linux/bitops.h>
#include <linux/uaccess.h>
+#include <linux/vmalloc.h>
#include <linux/slab.h>
/*
@@ -131,7 +132,8 @@ EXPORT_SYMBOL(ethtool_op_set_ufo);
* NETIF_F_xxx values in include/linux/netdevice.h
*/
static const u32 flags_dup_features =
- (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
+ (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
+ ETH_FLAG_RXHASH);
u32 ethtool_op_get_flags(struct net_device *dev)
{
@@ -205,18 +207,24 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo info;
const struct ethtool_ops *ops = dev->ethtool_ops;
- if (!ops->get_drvinfo)
- return -EOPNOTSUPP;
-
memset(&info, 0, sizeof(info));
info.cmd = ETHTOOL_GDRVINFO;
- ops->get_drvinfo(dev, &info);
+ if (ops && ops->get_drvinfo) {
+ ops->get_drvinfo(dev, &info);
+ } else if (dev->dev.parent && dev->dev.parent->driver) {
+ strlcpy(info.bus_info, dev_name(dev->dev.parent),
+ sizeof(info.bus_info));
+ strlcpy(info.driver, dev->dev.parent->driver->name,
+ sizeof(info.driver));
+ } else {
+ return -EOPNOTSUPP;
+ }
/*
* this method of obtaining string set info is deprecated;
* Use ETHTOOL_GSSET_INFO instead.
*/
- if (ops->get_sset_count) {
+ if (ops && ops->get_sset_count) {
int rc;
rc = ops->get_sset_count(dev, ETH_SS_TEST);
@@ -229,9 +237,9 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
if (rc >= 0)
info.n_priv_flags = rc;
}
- if (ops->get_regs_len)
+ if (ops && ops->get_regs_len)
info.regdump_len = ops->get_regs_len(dev);
- if (ops->get_eeprom_len)
+ if (ops && ops->get_eeprom_len)
info.eedump_len = ops->get_eeprom_len(dev);
if (copy_to_user(useraddr, &info, sizeof(info)))
@@ -479,6 +487,38 @@ static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
list->count++;
}
+/*
+ * ethtool does not (or did not) set masks for flow parameters that are
+ * not specified, so if both value and mask are 0 then this must be
+ * treated as equivalent to a mask with all bits set. Implement that
+ * here rather than in drivers.
+ */
+static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
+{
+ struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
+ struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
+
+ if (fs->flow_type != TCP_V4_FLOW &&
+ fs->flow_type != UDP_V4_FLOW &&
+ fs->flow_type != SCTP_V4_FLOW)
+ return;
+
+ if (!(entry->ip4src | mask->ip4src))
+ mask->ip4src = htonl(0xffffffff);
+ if (!(entry->ip4dst | mask->ip4dst))
+ mask->ip4dst = htonl(0xffffffff);
+ if (!(entry->psrc | mask->psrc))
+ mask->psrc = htons(0xffff);
+ if (!(entry->pdst | mask->pdst))
+ mask->pdst = htons(0xffff);
+ if (!(entry->tos | mask->tos))
+ mask->tos = 0xff;
+ if (!(fs->vlan_tag | fs->vlan_tag_mask))
+ fs->vlan_tag_mask = 0xffff;
+ if (!(fs->data | fs->data_mask))
+ fs->data_mask = 0xffffffffffffffffULL;
+}
+
static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
void __user *useraddr)
{
@@ -493,6 +533,8 @@ static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
return -EFAULT;
+ rx_ntuple_fix_masks(&cmd.fs);
+
/*
* Cache filter in dev struct for GET operation only if
* the underlying driver doesn't have its own GET operation, and
@@ -667,19 +709,19 @@ static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
break;
case IP_USER_FLOW:
sprintf(p, "\tSrc IP addr: 0x%x\n",
- fsc->fs.h_u.raw_ip4_spec.ip4src);
+ fsc->fs.h_u.usr_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc IP mask: 0x%x\n",
- fsc->fs.m_u.raw_ip4_spec.ip4src);
+ fsc->fs.m_u.usr_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP addr: 0x%x\n",
- fsc->fs.h_u.raw_ip4_spec.ip4dst);
+ fsc->fs.h_u.usr_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP mask: 0x%x\n",
- fsc->fs.m_u.raw_ip4_spec.ip4dst);
+ fsc->fs.m_u.usr_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
break;
@@ -775,7 +817,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
if (regs.len > reglen)
regs.len = reglen;
- regbuf = kzalloc(reglen, GFP_USER);
+ regbuf = vmalloc(reglen);
if (!regbuf)
return -ENOMEM;
@@ -790,7 +832,7 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
ret = 0;
out:
- kfree(regbuf);
+ vfree(regbuf);
return ret;
}
@@ -1175,8 +1217,11 @@ static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
return -EFAULT;
if (edata.data) {
- if (!dev->ethtool_ops->get_rx_csum ||
- !dev->ethtool_ops->get_rx_csum(dev))
+ u32 rxcsum = dev->ethtool_ops->get_rx_csum ?
+ dev->ethtool_ops->get_rx_csum(dev) :
+ ethtool_op_get_rx_csum(dev);
+
+ if (!rxcsum)
return -EINVAL;
dev->features |= NETIF_F_GRO;
} else
@@ -1402,14 +1447,22 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
if (!dev || !netif_device_present(dev))
return -ENODEV;
- if (!dev->ethtool_ops)
- return -EOPNOTSUPP;
-
if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
return -EFAULT;
+ if (!dev->ethtool_ops) {
+ /* ETHTOOL_GDRVINFO does not require any driver support.
+ * It is also unprivileged and does not change anything,
+ * so we can take a shortcut to it. */
+ if (ethcmd == ETHTOOL_GDRVINFO)
+ return ethtool_get_drvinfo(dev, useraddr);
+ else
+ return -EOPNOTSUPP;
+ }
+
/* Allow some commands to be done by anyone */
switch (ethcmd) {
+ case ETHTOOL_GSET:
case ETHTOOL_GDRVINFO:
case ETHTOOL_GMSGLVL:
case ETHTOOL_GCOALESCE:
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